Instruction manual

C-Bus By Demand 3
Training Manual 29
2.5 Command Routing
Commandroutingisaveryimportantconsiderationtocontemplatewhendesigningamultiple
network C‐Bus installation. Every single C‐Bus command has information in it, that specifies
whichnetworktocommunicatewith.
WhenroutingC‐Buscommands,itisimportanttounderstandtwothings:
 1) IfaC‐Buscommandisgeneratedspecificallyforadedicatednetwork,thenthededicated
network is the only C‐Bus network that will see and react to the command sent. Eg. A
selectedGroupAddressfromaTouchScreen.
 2) Messages containing no routing information  are destined only for the network that the
commandwasgeneratedon. For C‐Bus commands with no routing information to be
routedtoanothernetwork,anetworkbridgemustbeused.
Standard C‐Bus input units are notcapable of directly routin
g C‐Bus messages to other
networks.
ThereareanumberofdevicesthatwillactuallyrouteC‐Buscommandsacrossnetworkbridges.
Thesedevicesare:
 • NetworkBridges
 • Otherroutingenableddevices.
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2.5.1 BridgeRouting
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OnC‐Busnetworks wheretherearenodevices capableofroutingC‐Buscommandstoanother
C‐Bus network, a network bridge can be used to route the commands. This will allow
commandswithnoroutinginformationtobetransmittedto:
 • theadjacentC‐Busnetwork
 • oneotherC‐Busnetworkintheinstallation.
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